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100
MCP live MCP 2025-11-25 streamable-http

io.github.squidcode/tapwatermap

io.github.squidcode/tapwatermap

Query US tap-water quality from the EPA's SDWIS records — by city, system, or contaminant.

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Get before/after evidence when observed tools, schemas, authentication access, availability or the endpoint changes.

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Uptime
100.0%
5 direct probes · 30d
Response
316ms
last probe
Tools
10
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://mcp.tapwatermap.com/mcp
Score: 100/100
Handshake verified by our own probe.
why this score
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
10 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
10 items in total; 3 or more earns these points.
pass Describes itself 10/10
90 characters; more than 30 earns these points.

Tools · 10

search

Search TapWaterMap for US cities by name. Returns matching cities with an id you can pass to `fetch`. (ChatGPT/Deep-Research compatible.)

fetch

Fetch the full plain-English EPA tap-water record for a city id (e.g. 'vt/burlington') returned by `search`. (ChatGPT/Deep-Research compatible.)

search_cities

Find covered US cities by name, optionally within a state. Returns counts + the page URL for each.

get_city_water

The core tool: what the EPA has on record for a city's tap water — the active community water systems serving it, populations, sources, and violations (contaminant, health-based or not, dates, status,…

get_water_system

EPA record for a single water system by its PWSID (e.g. 'VT0005053'): name, population served, source, and violations.

list_state_cities

List all covered cities in a state (with violation counts).

find_cities

Filter/rank cities across the dataset — e.g. cities in TX with open health-based violations, or cities with a specific contaminant. Returns ranked matches.

compare_cities

Compare the EPA records of several cities side by side. Pass cities as 'City, ST' strings.

explain_contaminant

Plain-English explanation of an EPA contaminant by name or code: the EPA name, whether the EPA classifies it as health-based, and how often it appears in our records. Not medical advice.

coverage_stats

What TapWaterMap covers: states, cities, total EPA violation records, and the data quarter/date.

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "io.github.squidcode/tapwatermap": {
      "url": "https://mcp.tapwatermap.com/mcp",
      "transport": "streamable-http"
    }
  }
}